<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商管理系统</span>
            </div>
            <el-button type="info" @click="loginout">退出</el-button>
        </el-header>
        <!-- 主体区域 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="isCollapse ?'64px':'200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边栏菜单区域 -->
                <el-menu
                background-color="#333744"
                text-color="#fff"
                active-text-color="#409EFF" 
                unique-opened 
                :collapse="isCollapse"
                :collapse-transition="false"
                :router='true' 
                :default-active='activePage'
                >
                
                <!-- 一级菜单 -->
                <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
                    <!-- 一级菜单的模板 -->
                    <template slot="title">
                        <!-- 图标 -->
                    <i :class="iconsObj[item.id]"></i>
                    <span>{{item. authName}}</span>
                    </template>
                    <!-- 二级菜单 -->
                    <el-menu-item :index="'/'+subItem.path" 
                    v-for="subItem in item.children" 
                    :key="subItem.id"
                    @click="saveNavState('/'+subItem.path)"
                    >
                        <template slot="title">
                        <!-- 图标 -->
                        <i class="el-icon-menu"></i>
                        <span>{{subItem.authName}}</span>
                        </template>
                    </el-menu-item>
                </el-submenu>
                </el-menu>
          </el-aside>
          <!-- 右侧内容 -->
          <el-main>
              <!-- 路由占位符 -->
              <router-view></router-view>
          </el-main>
        </el-container>
    </el-container>
</template>
<script>
export default {
    data(){
        return{
            menulist:[],
            iconsObj:{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao',


                },
            //是否折叠
            isCollapse:false,
            //被激活的链接
            activePage:''

            

        }
    },
    created(){
        this.getMenuList()
        this.activePage=window.sessionStorage.getItem('activePath')
    },
    methods:{
        loginout(){
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
        //获取所有菜单
        async getMenuList(){
            const {data:res}=await this.$http.get('menus')
            console.log(res);
            // if(res.meta.status!=200) return this.$message.error(res.meta.msg)
            this.menulist=res.data
            console.log(res);
        },
        //点击按钮，切换菜单的折叠与展开
        toggleCollapse(){
            this.isCollapse=!this.isCollapse

        },
        //保存连接的激活状态
        saveNavState(activePage){
        window.sessionStorage.setItem('activePath',activePage)
        this.activePage=activePage
        }
    }
    
}
</script>
<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }

}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right:none
    }
}
.ele-main{
    background-color: #EAEDF1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;

}

</style>